Derailed doors realigned, cables and drums renewed, kinked track swapped.
On open lots it can be, mostly on wide doors that have no strut.
This site's price table lists $120 to $245.
$175 to $325, per this site's price table.
Swapping it out is $195 to $335 on this site's price table.
Please do not. The springs hold tension and the door is heavy enough to injure.